
public class xList 
{
	private int[] arr = new int[20];
	int index = 0;
	
	public void addStart( int val )
	{
		
	}
	public void addEnd( int val )
	{
		arr[index++] = val;
	}
	public void addPos( int pos, int val )
	{
		
	}
	public void delStart()
	{
		
	}
	public void delEnd()
	{
		index--;
	}
	public void delPos( int pos )
	{
		
	}
	public int size()
	{
		return index;
	}
	public int get(int index)
	{
		return arr[index];
	}
	public void set(int index, int val)
	{
		arr[index] = val;
	}

}
